https://www.cisco.com/c/en/us/support/ios-nx-os-software/ios-software-release-15-0-1-se/model.html

公司一台设备， WS-C2960S-24TS-L，是思科24口1000M的二层交换杨，使用的IOS版本为12.2（55）　universalk9-M的IOS软件，最近公司安装了一些数字摄像头，把监控主机和一台球型监控接到了这台机器上，接口的收发速率远大于普通办公用的速率，下面是我复制的两个接口的速率。

G1/0/3（监控主机接口）

交换机是网络常用设备之一，也是网络必备设备之一，作为网络的基础构件，它的安全性着实成为许多工程师及网管人员的首要关注点。

https://www.docin.com/p-830687209.html

https://blog.csdn.net/netsec51sec/article/details/98956759

When working on IOS update for one standalone Cisco 3560x to meet our environment requirement, I was so surprising the total time for Cisco 3560x taking new IOS image, which was more than 30+ minutes. I was thinking to reset it during the process because it is way longer than other Cisco routers, switches and firewalls I updated before. Usually total IOS update takes less than 5 minutes from the beginning process of uploading ios to new ios fully loaded.